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TVM. KENNISH, JR., 0F NEYV YORK, N. Y.

MARINE STEANE-ENGINE.

Specification of Letters Patent No.

22.736. dated January 25, 1859.

To all i/imn it 'may Concern:

13e it known that` l, Umani KENNISH, Jr.. nl New Yin-lf. in lhe rnunty ot New York. in the `Stale ol" New Ynrlt. have invented a new and Improved Mede ef lleliering the Marine Sieanplllngine 0f the li'ennlre of the ."..ino plnre Againsty lhieh i1 has at Present to Cnntend; and I de herelnr declare that the Jfollowing is a full. elear. and exael dewriptinn nl' the Raine. reterenee bring had to the aeronipanying elrarfingwl and lo the lettera ni. reference inarlied therein.

The naiure ot nilrv invention venais@ in placing an elhiiwed pipe in the rare ansed hy a Yeesell; progre through the water. ln a nii'le-wheel slean'ler this pipe ify placed innnedialrlY behind the paddle. in order that the rare llnliing over [he middle et the pipe Fig. l" will he ine'eaaed hy the haelt water ot the wheel. ln a Screw propeller the pipe in plared on the Stern et the \`e f el in front ol the Herew in Order lo inrit-eee the rare pa t the pipe d Fig. h i the draft water ot' the propeller. rlhis` arruinulated speed trein the paddle wheel over "A Fig. l" or from the screw over d Fig. ira sn'tlitient to torni a Yat-num in the auxiliar)Y pipep .i\ or n Fig. l er '2. which heilig ronnetted with the present discharge pipe oil" the engine trans'ler the Vaenuin to the neutral l ide of the air pui'np of the low pre-aurineain engine. thus` relieving il of the presi ire o'lE the atmosphere. In a high preaanre engine the diseharge pipe leading directly troni the Stern is connected with the auxiliar)Y pipe represented in Fig. Q.

To enahleothers sliilledin theartntn make and use my invention I will proceed t0 describe ita eenetruetien and operation.

I consti-net niy pipe ot ,Qheeti copper er other metal in an elhow forni and attach it le the ship over the ineuth of the present diaeharge pipe by a` flange at B Figs. l and 2 with its mouth C Fig. l peinting t0- ward the stern. In a side Wheel vessel the anxiliar).Y pipe :is A Fig. l is: placed iininediateliY hehind the paddle wheel in a line willi the eenier et the lower hueket in order that the full Vtorre of the haehY water may paas over the hell inouih el the pipe. which in a Wesel whose paddle wheel is thirty Yt'eet in diameter. inaliing eighteen revolutions per minnie would he twentrwight feet per aeeoud; this added te the rale et the resselh progrws through the water (Fay ten iniles per hour) would he forty two feet per wennd. This speed is ulieient to Jforni a Varnuin in the auxiliaryY pipe "HX" Fig. l whieh heilig eonnerted with the pregent diseharge pipe "1) Fig. Q at "l Fig. 2" drawn` the water troni the upper Side et the piston ot' the air punlp E Fig. 2 through pipe l) Fig. Q. thus relieving the engine of the pira-nre et il aliuoaphere en the upper Side oi the pinion l Fig. 2 in addition to the eolinnn ol water it han to litt when diaehargiug ai the inouth of the pipe l) at B Fig. i2 without the aid et the auxiliar)Y pipe i. Fig. t?. whii'li all enginea` de at present.

n a sri-ew propeller the anxiliarjrv pipe is attached to the Stern over the ineuth of the presaenl discharge pipe and directly7 in trent` ol" the lwrew in order that the raee of water the screw drage forward to Supply itself will in adi'lition lo the 4apeed of the wheel through the water he Htilliifient l0 terni a vaeiuiin in the auxiliaryY pipe d Fig. il. in a niinilar nianner to that at A Fig. l. In a low pressure propeller the di eharge pipe of il 1 air plnnp is led to the stern at B Fig. 3 to where the pipe d is atlaehed.

`What I claim as in v iiwention and desire te seeure hy Letters Patent is- The aplieation of an auxiliary pipe in the present discharge pipe 0f a niarine `teamengine in the nranner and for the purpose deaerihed in the Specification.

UNL KENNISH JR. [1..

litnesses J. G. BLAGKWELL, L. R. SPILMAN. 

